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- #include <stdio.h>
- #include "ohos_init.h"
- #include "iot_gpio.h"
- #include "iot_gpio_ex.h"
- #include "iot_i2c.h"
- #include "cmsis_os2.h"
- #define IIC_SDA 0
- #define IIC_SCL 1
- #define ADDR 0x27 // 0100111
- #define IIC_IDX 1
- /*
- Command Register
- 0 Input port 0
- 1 Input port 1
- 2 Output port 0
- 3 Output port 1
- 4 Polarity Inversion port 0
- 5 Polarity Inversion port 1
- 6 Configuration port 0
- 7 Configuration port 1
- */
- #define CMD_CFG0 6
- #define CMD_CFG1 7
- #define CMD_OUT0 2
- #define CMD_OUT1 3
- int write_iic(uint8_t* data){
- int ret = IoTI2cWrite(IIC_IDX, (ADDR << 1) | 0x00, data, 3);
- //printf("***@@@###$$$ ret = %d\n",ret);
- return ret;
- }
- //start
- uint8_t CFG0[] = {CMD_CFG0,0x0,0x0}; //配置为输出
- uint8_t CFG1[] = {CMD_CFG1,0x0,0x0}; //配置为输出
- uint8_t OUT0[] = {CMD_OUT0,0x00,0x00}; // 输出
- uint8_t OUT1[] = {CMD_OUT1,0x00,0x00}; // 输出
- char alpha[8][9] = {
- "11111111",
- "11100000",
- "11100000",
- "11111111",
- "11111111",
- "11100000",
- "11100000",
- "11111111"
- };
- // char alpha[8][9] = {
- // "00011111",
- // "11100000",
- // "11100000",
- // "00011111",
- // "00011111",
- // "11100000",
- // "11100000",
- // "00011111"
- // };
- void write_data(char byte1,char byte2){
- //printf("write %02x ,%02x\n",byte1,byte2);
- uint8_t data[3] = {CMD_OUT0,0x00,0x00};
- data[1] = byte1;
- data[2] = byte2;
- write_iic(data);
- data[0] = CMD_OUT1;
- write_iic(data);
- //printf("write %02x ,%02x\n",byte1,byte2);
- // printf("data[3] = %c\n",data[3]);
- // printf("data[2] = %c\n",data[2]);
- // printf("data[1] = %c\n",data[1]);
- // printf("data[0] = %c\n",data[0]);
- }
- void iic(void* args ){
- int i,j;
- printf("iic thread running...");
- IoTGpioInit(IIC_SDA);
- IoTGpioInit(IIC_SCL);
- IoTGpioSetFunc(IIC_SDA, IOT_GPIO_FUNC_GPIO_0_I2C1_SDA);
- IoTGpioSetFunc(IIC_SCL, IOT_GPIO_FUNC_GPIO_1_I2C1_SCL);
- IoTI2cInit(IIC_IDX, 400000);
-
- write_iic(CFG0);
- write_iic(CFG1);
-
- usleep(20);
- //usleep(200*1000);
-
- write_iic(OUT0);
- write_iic(OUT1);
- //usleep(1000*1000);
- usleep(100);
- while(1){
-
- for(int i=0;i<8;i++){
- unsigned char hex = 0;
- for(int j=0;j<8;j++){
- hex = hex <<1;
- if(alpha[i][j] == '1'){
- hex = hex | 0x1;
- }
- }
- OUT1[2] = hex;
- OUT0[1] = ~(1 << i);
- write_data(~(1 << i),hex);
-
- //usleep(100); //延时,肉眼无法观察的速度
- //alpha[i][j] = 0xff; //消隐,防止给下次扫描带来影响
- //alpha[i][j] == '0';
- // char alpha[8][9] = {
- // "00000000",
- // "00000000",
- // "00000000",
- // "00000000",
- // "00000000",
- // "00000000",
- // "00000000",
- // "00000000"
- // };
- //hex = 0; //消隐,防止给下次扫描带来影响
- //usleep(100);
- // printf("OUT1[2] = %c\n",OUT1[2]);
- // printf("OUT1[1] = %c\n",OUT1[1]);
- }
- //osDelay(1000);
- usleep(1000); //延时,肉眼无法观察的速度
- // //alpha[i][j] = 0xff; //消隐,防止给下次扫描带来影响
- alpha[i][j] = '0';
- }
- // printf("hex = %c\n",hex);
- // printf("OUT1[2] = %d\n",OUT1[2]);
- // printf("OUT1[1] = %d\n",OUT1[1]);
- //usleep(10000); //延时,肉眼无法观察的速度
- //alpha[i][j] = 0xff; //消隐,防止给下次扫描带来影响
- //alpha[i][j] == '0';
- // char alpha[8][9] = {
- // "00000000",
- // "00000000",
- // "00000000",
- // "00000000",
- // "00000000",
- // "00000000",
- // "00000000",
- // "00000000"
- // };
- //printf("set finish!\n");
- }
- void iic_entry(){
- printf("iic_entry called \n");
- osThreadAttr_t attr;
- attr.name = "thread_iic";
- attr.attr_bits = 0U; // 如果为1 ,则可以使用osThreadJoin函数
- attr.cb_mem = NULL; //控制快的指针
- attr.cb_size = 0U;
- attr.stack_mem = NULL; //栈内存指针
- attr.stack_size = 1024 * 4; //栈大小
- attr.priority = 25; //优先级
- if (osThreadNew((osThreadFunc_t)iic, NULL, &attr) == NULL)
- {
- printf("Fail to create thread!\n");
- }
- }
- APP_FEATURE_INIT(iic_entry);
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